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PHYCOLOGICAL SOCIETY OF AMERICA

Glossary

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D

• desmid - green algae that have conjugation of non-flagellate, amoeboid gametes
• diatom - member of Bacillariophyceae
• diatomaceous earth - siliceous geological deposits made up of diatom frustules
• diffuse growth - generalized growth, not localized at apex or base
• dioecious - (two houses) producing male and female gametes on different individuals or clones
• diploid - having twice the basic haploid number of chromosomes
• diplontic
• diurnal - having daily periodic cycle, e.g. endogenous circadian rhythm

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